i recently bought a jeep with a sb 350 in it and i want to upgrade the plugs and wires but i`m not sure what size to use.i`ve run the numbers on the block and it is a 69-80 block.if anyone could help me out it would be greatly apreciated.
2007-07-25 11:55:47 · 10 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Chevrolet
Look up the head casting # 1st and see what year heads you have. The block don't matter much due to fact that heads can be swapped around and the plugs screw into heads not block.. To find the head casting # take a valve cover off and look for a longer # on the head, between a couple of the rocker studs. Then look that # up at www.mortec.com
GM used 2 major types of spark plugs.
Up to about 1974 the plugs had a washer seat and a 13/16" hex wrench fitting.
about '75 up through '86 they used a taper seat, 5/8" hex wrench fitting.
If you need washer seat design.. A good starting point would be AC Delco R45S
If you need taper seat design.. AC Delco R45TS.
Plug wires... You need to know 1 thing before you buy plug wires... Do you have a points dist. or HEI dist?
HEI will have a large cap, with a square on top center of cap.. The coil is mounted inside the cap.
Points will have a small, round cap and coil a round can like coil mounted to intake, firewall, etc with a wire running to it that looks like a spark plug wire.
I would use 8mm jacketed wires.
2007-07-25 12:12:20 · answer #1 · answered by chevyraceman_383 7 · 1⤊ 0⤋
Any shop like Autozone will have a book listing plugs for your year. They will list the basic, platinum and iridium plugs, different makes, and you choose. You need that list because you have to get the correct hear range. Too hot, they burn out early, too cold, they carbon and short out early. But an upgrade will be a platinum or iridium. As far as plug wires, the upgrades could be expensive, and will be from a maker of performance parts, like AcCel. Again, they will be custom fit sets, and you need the catalogue listing to get the right set.
2007-07-25 12:17:45 · answer #2 · answered by Fred C 7 · 0⤊ 0⤋
R45TS was the original AC Delco spark plug But they were replaced with a upgrade R43TS either will work fine and both are available at any discount parts store
2007-07-25 14:47:53 · answer #3 · answered by SAM I AM 4 · 1⤊ 0⤋
Moroso and MSD sells large diameter RFI wires that have low resistance and will not ruin your radio reception. They are custom fit wires. I believe they sell sets that will go beneath headers if you have them. Generaly speaking most people prefer the set that goes on top and you can anchor them with a loom set that bolts on the lower valve cover holes.
2007-07-25 12:07:19 · answer #4 · answered by Country Boy 7 · 0⤊ 0⤋
Go with NGK 7mm Quick Spark and Throttle Response.
2016-05-18 04:23:39 · answer #5 · answered by ? 2 · 0⤊ 0⤋
anything from a r43ts, r44ts, or a r45ts. and please...please dont buy bosch platinum or anything thats not ac delco.. platinum plugs arent worth their price. iwould also use a 8 mil wire.
2007-07-29 03:48:36 · answer #6 · answered by 409power 2 · 0⤊ 0⤋
are they the big plugs or the small ones? use 8 mm wires and a high output coil maby some bosch plats or ngk plugs
2007-07-25 14:36:06 · answer #7 · answered by superkack2000 2 · 0⤊ 1⤋
Call an auto parts place and ask them. They should be able to get you set up with the right ones.
2007-07-25 12:03:37 · answer #8 · answered by Renka 2 · 0⤊ 0⤋
Accel cap and rotor? get one and run 8.8 accel wires and reg. sprark plugs no platnium
2007-08-01 08:38:10 · answer #9 · answered by 1986elcaminoman 1 · 0⤊ 0⤋
Try Ebay motors or Ebay express
www.ebaymotors.com
or
www.express.ebay.com
2007-08-01 13:35:59 · answer #10 · answered by Anonymous · 0⤊ 0⤋